#VU122485 Resource exhaustion in PowerDNS Recursor - CVE-2026-0398
Published: February 9, 2026
Vulnerability identifier: #VU122485
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2026-0398
CWE-ID: CWE-400
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
PowerDNS Recursor
PowerDNS Recursor
Software vendor:
PowerDNS.COM B.V.
PowerDNS.COM B.V.
Description
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to application does not properly control consumption of internal resources. A remote attacker can trigger memory exhaustion by publishing and querying a crafted zone.
Remediation
Install updates from vendor's website.